Have you checked your PHP error log? Are there any fatal errors showing there?
Check if the files are cached correctly. Look in wp-content/cache/supercache/ and make sure the cache files in the sub directories have content.
Enable debugging in the plugin and check what happens if you load a white page. Any error showing there?
I remember there were cache files in subdirectories.
I enabled debugging. I will check again subdirectory contents and PHP errors whenever this problem shows up again… Thanks for your suggestions!
I am facing this white page problem again just now on page:
https://lebonheurestpossible.org/sensibilite-a-linsuline-cetose-et-vieillissement/
The content of the subfolder can be downloaded here (and unzipped):
https://lebonheurestpossible.org/services/sensibilite-a-linsuline-cetose-et-vieillissement.zip
No error is displayed when I set up debugiing on wp-config.php
Now, my page is again displayed correctly because its cache has been reconstructed. I stored the two versions of its cache, one named “bad” and the other one “good”. When I compare these files I notice differences. Notably the “bad” version contains code mentioning “mobile”… But I cannot see why it produces a white page nor how it was contructed.
You can compare these two files contained in the INDEX_FILES folder:
https://lebonheurestpossible.org/services/INDEX_FILES.zip
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This reply was modified 3 months, 4 weeks ago by
belbernard.
Now I notice that the only detail in the “bad” version of the cache is a mention of “mobile” class:
<html lang=”fr-FR” class=”mobile”>
If I delete “mobile”, the cache “index-https.html” is displayed correctly (on computer). Otherwise it is displayed as a white page.
How can I prevent WP SuperCache from creating cache files in the “mobile” class?
I found the solution: enable “Support for mobile devices” in the “advanced” settings. This will create distinct cache files for computers and mobile devices.
